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Biomordanting willow bark dye on cellulosic materials / Tia Lohtander in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)  

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 4-14 Titre : Biomordanting willow bark dye on cellulosic materials Type de document : texte imprimé Auteurs : Tia Lohtander, Auteur ; Suvi Arola, Auteur ; Päivi Laaksonen, Auteur Année de publication : 2020 Article en page(s) : p. 4-14 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Analyse spectrale Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Chromatographie en phase liquide à hautes performances Colorants -- Absorption Colorants -- Adsorption Colorants végétaux Ecorces Etalonnage Extraction (chimie) Mordançage (teinture) Saules et constituants Teinture Index. décimale : 667.3 Teinture et impression des tissus Résumé : A semi-quantitative study of willow bark dye adsorption on two different cellulose materials using biomordants was carried out. The studied celluloses were microcrystalline cellulose (MCC) AaltoCell and regenerated Ioncell-F (IC) fibres. The dye was a hot water extract of willow bark and the adsorption to cellulose was carried out using carboxylic acid-containing biomordants, namely, oxalic acid, citric acid and tannic acid. Alum was employed as the reference mordant. A semi-quantitative estimation of the dye uptake was conducted using high-performance liquid chromatography equipped with a diode array detector and also by visual inspection, as well as an evaluation of the coloration using CIELab parameters. The mechanism of the dye adsorption on the cellulose surfaces was studied via Fourier Transform–infrared spectroscopy. According to the results, MCC had a higher affinity for polyphenolic dye than the regenerated cellulose fibres. Dye uptake on MCC was 50%-80% and 44%-57% on IC. For MCC, the biomordants improved the dye uptake more effectively than the control mordant, alum, whereas for IC the biomordants were less effective than alum. Note de contenu : - EXPERIMENTAL : Cellulose materials - Dye materials and chemicals - Dye extraction - Dyeing of cellulosic materials - Preparation of HPLC samples - Spectrophotometric measurements - HPLC-DAD-MS analysis - Calibration curves - Calculation of dye adsorption - RESULTS AND DISCUSSION : Spectrophotometric characterisation of WBE - Composition of the WBE solutions - Dyeing of cellulosic materials - Dye adsorption efficiency DOI : https://doi.org/10.1111/cote.12442 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12442 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33695 [article]

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Titanium dioxide grafted with silane coupling agents and its use in blue light curing ink / Lili Wang in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)  

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 15-22 Titre : Titanium dioxide grafted with silane coupling agents and its use in blue light curing ink Type de document : texte imprimé Auteurs : Lili Wang, Auteur ; Xiaying Jiang, Auteur ; Chenglong Wang, Auteur ; Yi Huang, Auteur ; Yiding Meng, Auteur ; Jianzhong Shao, Auteur Année de publication : 2020 Article en page(s) : p. 15-22 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact Bleu (couleur) Caractérisation Dioxyde de titane Dispersions et suspensions -- Stabilité Encre Encre -- Propriétés mécaniques Fourier, Spectroscopie infrarouge à transformée de Granulométrie Greffage (chimie) Photoréticulation Réaction de couplage Rhéologie Silanes Thermogravimétrie Index. décimale : 667.2 Colorants et pigments Résumé : To improve the properties of titanium dioxide particles and realise their firm anchorage in blue light curing film, three modified titanium dioxide particles were prepared by grafting 3-(trimethoxysilyl)propyl methacrylate, 3-aminopropyltriethoxysilane and hexadecyltrimethoxysilane. The surface changes of titanium dioxide particles after modification were characterised. The dispersion stability, photo-polymerisation, rheological and mechanical properties of modified titanium dioxide blue light curing inks were investigated. Results showed that compared with native titanium dioxide, modified titanium dioxide particles were more appropriate for blue light curing ink. The particle sizes of the three modified titanium dioxide particles became smaller, their surfaces exhibited hydrophobicity, and the viscosity of the modified titanium dioxide inks decreased slightly. Of the three modified titanium dioxide particles, 3-(trimethoxysilyl)propyl methacrylate- and hexadecyltrimethoxysilane-modified titanium dioxide particles exhibited better dispersion stability in blue light curing ink. In particular, 3-(trimethoxysilyl)propyl methacrylate-modified titanium dioxide blue light curing ink showed the best photo-polymerisation and mechanical properties, which indicated the participation of the pigment grafted by double bonds in the blue light curable polymerisation. Using modified titanium dioxide in blue light curing ink, the dry/wet rubbing fastness of the printed fabrics improved. Note de contenu : - EXPERIMENTAL : Materials - Grafting of silane coupling agent onto the surface of titanium dioxide particles - Preparation of blue light curing ink - Preparation of blue light curing - Characterisations - RESULTS AND DISCUSSION : FT-IR spectroscopy of modified titanium dioxide - Thermogravimetric analysis of modified titanium dioxide - Elemental analysis of modified titanium dioxide - Particle size analysis of modified titanium dioxide - Contact angle analysis of modified titanium dioxide - Dispersion stability of modified titanium dioxide - Rheological porperties of modified titanium dioxide bluelight curing ink DOI : https://doi.org/10.1111/cote.12434 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12434 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33696 [article]

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Simulation, synthesis, characterisation and dyeing properties of a fluorescent hemicyanine dye / Songsong Tang in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)  

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 23-33 Titre : Simulation, synthesis, characterisation and dyeing properties of a fluorescent hemicyanine dye Type de document : texte imprimé Auteurs : Songsong Tang, Auteur ; Chuanxiang Qin, Auteur ; Hui Li, Auteur ; Guoqiang Chen, Auteur Année de publication : 2020 Article en page(s) : p. 23-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse toxicologique Caractérisation Colorants -- Propriétés tinctoriales Colorants -- Synthèse Fluorescence Hemicyanine Photostabilité Polyacryliques Simulation par ordinateur Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : In this study, a hemicyanine dye, trans-4-(4-(diethylamino)styryl)-1-ethylpyridinium bromide (DYE-BD), was synthesised and simulated. The maximum absorption wavelength of DYE-BD was calculated with the same basis set by using the Gaussian 09 software based on different methods, while time-dependent density functional theory was applied to simulate the maximum emission wavelength of the designed dye. The changes in enthalpy and Gibbs free energy were simulated at the b3lyp/6-31G(d) level, and energy changes in the luminescence process were assessed using mathematical methods. Furthermore, DYE-BD was used to colour acrylic fabric following the typical dyeing procedure for cationic dyes. The photostability of the synthesised dye was analysed using quantum theory and mathematical methods. The synthesised dye, analysed using the Ecological Structure Activity Relationships class program, had no toxicity to aquatic life, while the acrylic fabrics dyed with DYE-BD met the fluorescent orange requirements for background and combined performance materials according to the EN ISO 20471:2013 standard. Note de contenu : - EXPERIMENTAL : Calculation method - Materials - Experiments - Dyeing process - RESULTS AND DISCUSSION : Enthalpy and Gibbs free energy - Fluorescent properties - Biotoxicity analysis of synthetic processes - Change of energy in the luminescence process - Analysis of the photostability - High visibility properties DOI : https://doi.org/10.1111/cote.12432 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12432 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33697 [article]

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Accelerated weathering performance of Scots pine preimpregnated with copper-based chemicals before varnish coating - Part 1 : coated with cellulosic and polyurethane varnishes / Ahmet Gunduz in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)  

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 34-44 Titre : Accelerated weathering performance of Scots pine preimpregnated with copper-based chemicals before varnish coating - Part 1 : coated with cellulosic and polyurethane varnishes Type de document : texte imprimé Auteurs : Ahmet Gunduz, Auteur ; Ergun Baysal, Auteur ; Turkay Turkoglu, Auteur ; Caglar Altay, Auteur ; Mustafa kucuktuvek, Auteur ; Huseyin Peker, Auteur Année de publication : 2020 Article en page(s) : p. 34-44 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Brillance (optique) Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Cuivre Décoloration Essais accélérés (technologie) Matériaux -- Imprégnation Pin sylvestre Polyuréthanes Vernis Index. décimale : 667.7 Cires, laques, vernis Résumé : This study aimed to determine the effect of accelerated weathering on gloss, surface hardness and colour changes of Scots pine (Pinus sylvestris L.). Test samples were impregnated with Adolit KD-5, Wolmanit CX-8 and Celcure AC-500 covered with cellulosic and polyurethane varnishes. The results showed that the values of surface hardness and gloss increased after accelerated weathering. While the surface hardness of Scots pine was increased for impregnated and polyurethane-coated varnish, it decreased for impregnated and cellulosic varnish-coated Scots pine after 1000 hours of accelerated weathering exposure. Copper-based chemical impregnation and varnish coating developed the gloss of Scots pine specimens relative to the surface characteristics observed in single-coated Scots pine specimens. While the most appropriate chemical was Celcure AC-500 for surface hardness, it was Adolit KD-5 for the gloss of Scots pine after 1000 hours of accelerated weathering exposure. Wood specimens impregnated prior to the application of varnish were more effective in stabilising the colour of Scots pine than Scots pine only coated with varnish. Polyurethane varnish-treated Scots pine showed better colour stability for each partial and total accelerated weathering exposure period. The total colour changes were lowest for polyurethane varnish-coated Scots pine impregnated with Celcure AC-500 after 1000 hours of accelerated weathering exposure. Note de contenu : - EXPERIMENTAL : Preparation of wood specimens and chemicals - Impregnation procedure - Coating of the wood surfaces - Surface hardness test - Gloss test - Colour test - Accelerated weathering test - RESULTS AND DISCUSSION : Surface hardness changes - Gloss changes - Colour changes DOI : https://doi.org/10.1111/cote.12435 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12435 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33698 [article]

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The influence of ink viscosity, water and fabric construction on the quality of ink-jet printed polyester / Chenyong Gao in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)  

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 45-59 Titre : The influence of ink viscosity, water and fabric construction on the quality of ink-jet printed polyester Type de document : texte imprimé Auteurs : Chenyong Gao, Auteur ; Tieling Xing, Auteur ; Xueni Hou, Auteur ; Guoqiang Chen, Auteur Année de publication : 2020 Article en page(s) : p. 45-59 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Essais (technologie) Fibres polyesters Impression jet d'encre Impression sur étoffes Rhéologie Solidité de la couleur Viscosité Index. décimale : 667.3 Teinture et impression des tissus Résumé : This paper is concerned with the quality of lines and disperse ink in printing patterns on different untreated polyester fabric constructions. The lines running in the weft and warp directions were printed on polyester fabric constructions, and printing accuracy was assessed. Ink spreading is one of the important factors that influences the ink distribution. Thus, in order to acquire satisfactory ink-jet printing products, it is essential to control the spreading of ink on the polyester fabric. To meet these conditions, a series of chemicals (disperse dye 5.01 wt%, PVP-K30 0-2 wt%, DEG 5-20 wt%, water 64.17-79.17 wt%, etc) with different mass fractions was used to prepare disperse ink. The jetting behaviour of ink was related to its surface tension and viscosity, which was characterised by an automatic surface tensiometer and rotational viscometer. Line profile was used to evaluate the printing effect. Low field nuclear magnetic resonance and three-dimensional super depth digital microscopy were used to reveal the relationships between the state of water, ink diffusion behaviour and printing sharpness. The results showed that increasing ink viscosity or decreasing free water content is advantageous to improve the sharpness of the printing pattern. The effects of fabric structural parameters on line image quality are discussed. The printing quality was closely related to the weight and structure of fabric. The heavy weight fabrics had accurate print pattern sharpness. The fastness test results showed that the ink printing pattern had good colour fastness. Note de contenu : - EXPERIMENTAL : Materials - Preparation of disperse dye paste - Formulation of direct ink-jet disperse ink - Characterisation of direct ink-jet disperse ink - Ink-jet printing - Printed fabric characterisation - RESULTS AND DISCUSSION : Analysis of disperse dye colour paste - Analysis of physical poroperties of disperse ink - Disperse ink LF NMR relaxation analysis - Image quality of ink-jet printing on polyester fabrics - Fastness properties DOI : sci-hub.se/10.1111/cote.12439 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12439 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33699 [article]

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Synthesising polymeric dispersants to apply to carbon black pigmented mill bases for use in ink-jet inks / Chun Yoon ; Jae-Hong Choi in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)  

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 60-74 Titre : Synthesising polymeric dispersants to apply to carbon black pigmented mill bases for use in ink-jet inks Type de document : texte imprimé Auteurs : Chun Yoon, Auteur ; Jae-Hong Choi, Auteur Année de publication : 2020 Article en page(s) : p. 60-74 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie) Encre jet d'encre Noir de carbone Polymères -- Synthèse Polymères en émulsion Index. décimale : 667.4 Encres Résumé : Dyes are an important component of drop-on-demand ink-jet inks and are commonly used in desktop printers. While they offer bright, vivid colour, these dyes exhibit poor light and water fastness. To combat this, researchers have started using pigmented ink-jet inks instead of dye-based inks to improve light and water fastness, but the pigments are insoluble in ink vehicles. To use pigments, dispersants must be applied ; however, this is a delicate process because the properties of the dispersant substantially affect how the pigmented mill base must be prepared. In this study, polymeric dispersants are synthesised based on the properties and ratios of monomers and the molecular weights of polymers. In total, 14 types of polymeric dispersants are synthesised and examined, with special attention paid to the dispersing properties of particle size reduction and the stability of the pigmented mill base used to prepare drop-on-demand ink-jet inks. This study describes the synthesis of the dispersants in terms of their suitability for commercial application. Note de contenu : - EXPERIMENTAL : Equipment - Materials - Chemical synthesis of polymers and preparation of dispersant solutions - Preparatioin of pigmented mill bases - Preparation of ink-jet ink formulations - RESULTS AND DISCUSSION : Polymer (polymer dispersant) synthesis - Preparation and physical properties of pigment mill bases - Physical and printing properties of ink formulations DOI : https://doi.org/10.1111/cote.12446 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12446 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33700 [article]

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A fluorescent probe for the dual detection of mercury ions and thiols based on a simple coumarin derivative / Pei Tao in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)  

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 75-86 Titre : A fluorescent probe for the dual detection of mercury ions and thiols based on a simple coumarin derivative Type de document : texte imprimé Auteurs : Pei Tao, Auteur ; Dongling Chen, Auteur ; Zhenxiang Xu, Auteur ; Yanxi Song, Auteur ; Hongqi Li, Auteur Année de publication : 2020 Article en page(s) : p. 75-86 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composés organiques -- Synthèse Coumarine La coumarine est une substance naturelle organique aromatique connue dans la nomenclature internationale comme 2H-1-benzopyrane-2-one, tanin qui peut être considéré en première approximation comme une lactone de l’acide 2-hydroxy-Z-cinnamique. Son odeur de foin fraîchement coupé a attiré l'attention des parfumeurs sur elle dès le XIXe siècle. Habituellement, la coumarine simple se trouve sous forme liée à un sucre qui la retient dans l'eau des vacuoles des cellules végétales : pour qu'elle soit émise, elle doit être séparée du sucre et subir une oxydation par l'oxygène de l'air pour donner la forme volatile, plus odorante. Le même terme de coumarine désigne aussi la classe des composés phénoliques dérivés de cette dernière molécule, la 2H-1-benzopyrane-2-one. Ces composés possèdent des hydroxyles phénoliques qui peuvent être méthylés ou être engagés dans des liaisons hétérosides, constituant alors la génine. Plus d’un millier de coumarines naturelles ont été décrites. Elles sont très largement distribuées dans le règne végétal. La coumarine utilisée en parfumerie (Shalimar de Guerlain ou Contradiction de Calvin Klein) ou pour aromatiser les aliments ou les boissons est surtout obtenue par synthèse. Prise en excès, elle peut provoquer des effets secondaires, tels que nausées, vomissements, vertiges et maux de tête et, alors qu'elle est normalement dégradée par le foie, induire une toxicité hépatique La coumarine est présente dans divers végétaux où elle participe à leur défense contre les herbivores. La coumarine simple est le composé responsable de l'odeur de foin coupé. (Wikipedia) Ions mercure Sondes fluorescentes Thiols Index. décimale : 547 Chimie organique : classer la biochimie à 574.192 Résumé : A fluorescent probe based on a simple coumarin derivative could recognise mercury ions (Hg(ii)) and thiols selectively in aqueous solution. The addition of Hg(ii) induced a blue shift of the fluorescence emission band of the probe while the fluorescence was almost quenched by the addition of p‐toluenethiol or cysteine (Cys). The detection limit of the probe towards Hg(ii) and Cys was 8 µmol/L. The probe could be used for the detection of Hg(ii) and thiols by the naked eye under ultraviolet light irradiation. Note de contenu : - General - Synthesis of 7-hydroxy-4-methylchromen-2-one (1) - Synthesis of 7-allyloxy-4-methylchromen-2-one (2) - Synthesis of 7-allyloxy-7-hydroxy-4methylchromen-2-one (E1) - General UV-vis and fluorescence spectra measurements DOI : https://doi.org/10.1111/cote.12447 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12447 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33701 [article]

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A systematic study of dyeing polybutylene succinate fibres / Dawei Li in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)  

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 87-96 Titre : A systematic study of dyeing polybutylene succinate fibres Type de document : texte imprimé Auteurs : Dawei Li, Auteur ; Bingjie Zhang, Auteur ; Shugen Wang, Auteur ; Chang E. Zhou, Auteur ; Chang Sun, Auteur Année de publication : 2020 Article en page(s) : p. 87-96 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bains de teinture -- Analyse Colorimétrie Morphologie (matériaux) Paramètres de solubilité Polybutylène succinate Solidité de la couleur Statistique Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : Biodegradable polybutylene succinate (PBS) fibre is a new type of textile fibre, but its application in the textile industry is limited by the lack of related dyeing methods. In this study, the solubility parameters of PBS fibres are calculated, and solvent dyes with similar solubility parameters are proposed to dye PBS fibres to show that the dyeing scheme creatively resolves the difficulty in dyeing PBS fibres. The technical parameters of suitable dyes, and the dyeing conditions with ethanol as the dyeing medium, consisted of a dyeing temperature of 90°C, a dyeing time of 30 minutes and a liquor ratio of 30:1. The dyeing results show that the levelling property is good, the dyebath exhaustion is high, and the washing fastness, the rubbing fastness and the perspiration fastness index of the dyed fibres are satisfactory. Note de contenu : - EXPERIMENTAL : Materials - Apparatus - Calculation of solubility parameters - Dyeing process - Dyebath exhaustion - Colour measurement - Colour fastness - Surface morphology - Statistical analysis - RESULTS AND DISCUSSION : Solubility parameters for dyeing PBS fibres - The influence of solubility parameters on PBS fibre dyeing - The influence of dyeing temperature on PBS fibre dyeing - The influence of dyeing time on the dyeing of PBS fibres - The influence of liquor ratio on dyeing of PBS fibres - Colour fastness of dyes PBS fibres DOI : https://doi.org/10.1111/cote.12448 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12448 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33702 [article]

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